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https://issues.apache.org/jira/browse/HDDS-3999?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17163112#comment-17163112
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Bharat Viswanadham edited comment on HDDS-3999 at 7/22/20, 10:44 PM:
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Hi [~maobaolong]
Thanks for reporting this issue.
I took a look at it, this is caused by HDDS-3685. And the tests have not caught
this because there is not test for the below scenario.
1. Initiate MPU
2. Part Upload in progress
3. Abort Upload
4. Part upload close to commit the part.
Attached a test patch to repro this.
was (Author: bharatviswa):
Hi [~maobaolong]
Thanks for reporting this issue.
I took a look at it, this is caused by HDDS-3685. And the tests have not caught
this because the scenario for this is
1. Initiate MPU
2. Part Upload in progress
3. Abort Upload
4. Part upload close to commit the part.
Attached a test patch to repro this.
> OM NPE and shutdown while S3MultipartUploadCommitPartResponse#checkAndUpdateDB
> ------------------------------------------------------------------------------
>
> Key: HDDS-3999
> URL: https://issues.apache.org/jira/browse/HDDS-3999
> Project: Hadoop Distributed Data Store
> Issue Type: Bug
> Components: Ozone Manager
> Affects Versions: 0.6.0
> Reporter: maobaolong
> Assignee: maobaolong
> Priority: Blocker
> Attachments: OM-NPE-Full.log, screenshot-1.png, test-repro.patch
>
>
> The related bad code.
> !screenshot-1.png!
> The following is the part log of OM. If you want to see the full log, you can
> download the attachment.
> 2020-07-20 16:28:56,395 ERROR ratis.OzoneManagerDoubleBuffer
> (ExitUtils.java:terminate(133)) - Terminating with exit status 2:
> OMDoubleBuffer flush threadOMDoubleBufferFlushThreadencountered Throwable
> error
> java.lang.NullPointerException
> at
> org.apache.hadoop.ozone.om.response.s3.multipart.S3MultipartUploadCommitPartResponse.checkAndUpdateDB(S3MultipartUploadCommitPartResponse.java:99)
> at
> org.apache.hadoop.ozone.om.ratis.OzoneManagerDoubleBuffer.lambda$null$0(OzoneManagerDoubleBuffer.java:256)
> at
> org.apache.hadoop.ozone.om.ratis.OzoneManagerDoubleBuffer.addToBatchWithTrace(OzoneManagerDoubleBuffer.java:201)
> at
> org.apache.hadoop.ozone.om.ratis.OzoneManagerDoubleBuffer.lambda$flushTransactions$1(OzoneManagerDoubleBuffer.java:254)
> at java.util.Iterator.forEachRemaining(Iterator.java:116)
> at
> org.apache.hadoop.ozone.om.ratis.OzoneManagerDoubleBuffer.flushTransactions(OzoneManagerDoubleBuffer.java:250)
> at java.lang.Thread.run(Thread.java:748)
> 2020-07-20 16:28:56,426 INFO om.OzoneManagerStarter
> (StringUtils.java:lambda$startupShutdownMessage$0(124)) - SHUTDOWN_MSG:
> /************************************************************
> SHUTDOWN_MSG: Shutting down OzoneManager at BAOLOONGMAO-MB0/10.78.32.49
> ************************************************************/
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